William’s baby came to this world just moments before auntie Venus took center court for her 2017 U.S. Open match against Maria Sakkari of Greece. “Obviously, I’m super excited,” Serena’s big sis told ESPN. “Words can’t describe”.

Prior to their daughter’s arrival, the couple insisted they didn’t know the sex, though Ohanian said he suspected it would be a girl—and Venus referred to the unborn child as “she” and “her”.

Williams first announced her pregnancy in April, when she accidentally posted a selfie in Snapchat showing off her 20-weeks bump in a bright yellow swimsuit. Following the accidental announcement, Williams continued to share more baby bump pictures on social media and opened up about becoming a mom in an interview with Vanity Fair.

“If you would have told me last year in October or November that I would have a baby, not be pregnant but have a baby, I would have thought you were the biggest liar in the world,” the American athlete confessed.

“I don’t know what to do with a baby. I have nothing… I’ve done absolutely nothing for the baby room,” she told the magazine.

Despite being caught off-guard by her pregnancy, and even though she doesn’t consider herself a “baby person”, he soon-to-be-husband thinks otherwise. Earlier this summer Ohanian said he knew motherhood would come easily to his fiancée. “She’s very good at a lot of things and well on her way to being an awesome mom too,” he told CNBC.

As for her future in tennis, the professional player never slowed down her workouts while she was expecting and she has promised to get back on the courts by 2018. “My baby is going to be in the stands,” she said in an interview in April, “hopefully cheering for me and not crying too much.”